Dovecot Cur and New Directories are empty

[Nguyen Dinh Phuoc Thanh]

Hi,

Recently, we faced an issue with dovecot. Mail delivered to New 
directory, but after we used Outlook to connect with POP3 protocol, 
there was no email delivered to Outlook and New/Cur directory was empty. 
If we don't use Outlook to connect, after a few minutes, it is empty 
also.
Would you please help me to solve this issue?

Below is the result from "dovecot -n"
---------------------------------------------------------------------
# 2.0.9: /etc/dovecot/dovecot.conf
# OS: Linux 2.6.32-504.el6.x86_64 x86_64 CentOS release 6.6 (Final) ext4
auth_mechanisms = plain login
debug_log_path = /var/log/dovecot-debug.log
dict {
  quotadict = mysql:/etc/zpanel/configs/dovecot2/dovecot-dict-quota.conf
}
disable_plaintext_auth = no
first_valid_gid = 12
first_valid_uid = 101
info_log_path = /var/log/dovecot-info.log
lda_mailbox_autocreate = yes
lda_mailbox_autosubscribe = yes
listen = *
lmtp_save_to_detail_mailbox = yes
log_path = /var/log/dovecot.log
mail_debug = yes
mail_location = maildir:/var/zpanel/vmail/%d/%n
managesieve_notify_capability = mailto
managesieve_sieve_capability = fileinto reject envelope encoded-
character vacation subaddress comparator-i;ascii-numeric relational 
regex imap4flags copy include variables body enotify environment mailbox 
date imapflags notify
passdb {
  args = /etc/zpanel/configs/dovecot2/dovecot-mysql.conf
  driver = sql
}
plugin {
  acl = vfile:/etc/dovecot/acls
  quota = maildir:User quota
  sieve = ~/dovecot.sieve
  sieve_dir = ~/sieve
  sieve_extensions = +notify +imapflags
  sieve_global_dir = /var/zpanel/sieve/
  sieve_global_path = /var/zpanel/sieve/globalfilter.sieve
  sieve_max_actions = 32
  sieve_max_redirects = 4
  sieve_max_script_size = 1M
  trash = /etc/zpanel/configs/dovecot2/dovecot-trash.conf
}
protocols = imap pop3 lmtp sieve
service auth {
  unix_listener /var/spool/postfix/private/auth {
    group = postfix
    mode = 0666
    user = postfix
  }
  unix_listener auth-userdb {
    group = mail
    mode = 0666
    user = vmail
  }
}
service dict {
  unix_listener dict {
    group = mail
    mode = 0666
    user = vmail
  }
}
service imap-login {
  inet_listener imap {
    port = 143
  }
}
service imap {
  vsz_limit = 256 M
}
service lmtp {
  unix_listener lmtp {
    mode = 0666
  }
}
service managesieve-login {
  inet_listener sieve {
    port = 4190
  }
  process_min_avail = 0
  service_count = 1
  vsz_limit = 64 M
}
service pop3-login {
  inet_listener pop3 {
    port = 110
  }
}
ssl = no
userdb {
  args = /etc/zpanel/configs/dovecot2/dovecot-mysql.conf
  driver = sql
}
protocol lda {
  mail_plugins = quota sieve
  postmaster_address = postmaster@###.com
}
protocol imap {
  imap_client_workarounds = delay-newmail
  mail_plugins = quota imap_quota trash
}
protocol lmtp {
  mail_plugins = quota sieve
}
protocol pop3 {
  mail_plugins = quota
  pop3_client_workarounds = outlook-no-nuls oe-ns-eoh
}
protocol sieve {
  managesieve_implementation_string = Dovecot Pigeonhole
  managesieve_max_compile_errors = 5
  managesieve_max_line_length = 65536
}
----------------------------------------------------------------

Thanks,
Thanh